There were many questions facing fans when they arrived at Heaton Park this weekend. Could the Stone Roses pull off the gig of their lives? Could Ian Brown stay in tune? Would they play any new songs? But the question nobody expected to be asking was: "How can I get a stranger's wee out of my shirt?" Over the weekend many fans complained about the lack of toilets at the event (a situation that seemed to have improved by Sunday). An unfortunate result of this was that a significant number of fans relieved themselves into empty drinking vessels and proceeded to rid themselves of said containers by hurling them into the crowd. One member of the audience on Saturday, who wished to remain anonymous, wrote to us:

It happened during the Beady Eye set. As Liam Gallagher attempted to rouse the crowd in another sub-par Beatles-inspired dirge, a projectile hit me on the back and splashed up the back of my head. It was warm, it was piss, it was in my hair. Apparently throwing plastic pint glasses of urine was back, and looked to have more life in it than than Ian Brown's questionable attempt at a rap during the breakdown of Love Spreads.

We saw about another six or seven get thrown during the Beady Eye set. Gig-goers around us theorised that it was probably some sort of dirty protest against the quality of the songwriting. The Scottish group in front of me offered me a joint and asked if I wanted them to go back and bottle the perpetator "in his face"; and a woman in front of me spent the next 20 mins in denial, rubbing her sodden cardigan in her face proclaiming: "Would I be doing this if it was piss?" Her horrified boyfriend eventually took her aside and made her take it off. The whole experience was rounded off by a wag shouting "Welcome to Manchester".

We'd been warned by a friend who went the night before that it might happen, but laughed off their report. The crowd, in age, seemed mostly closer to 40 than 30: these were grown men with families and mortgages. These aren't the sort of people that revel in throwing pints of piss … are they? At least, for the record, the Roses were magical.